Gas and vapor burner



p 10, 1935. w. c. COLEMAN 2,013,683

GAS AND VAPOR BURNER Filed June 4, i954 INVENTOR. W, JZCOLE/MM A TTORNE Y.

Patented Sept. 10, 1935 4 Claims.

This invention relates to gas and vapor burners and the primary object is to provide a compact, easily operated, efficient burner which may be adapted to a number of uses, but which is particularly designed to be used in connection with a water boiler in which there is an elongated, vertical, cylindrical shell enclosed in the water tank.

A further object of the invention is tov provide a burner structure wherein there are main burners and a pilot burner, each receiving gas from a single gas supply conduit which has a constant pressure regulator, and an obstructor associated with the pilot that serves in a dual capacity, namely to initially spread the flame and thereby ignite the main burners, and after shutting ofi the latter to continue to supply a predetermined quantity of heat to the receptacle or other object being heated so as to maintain such receptacle, etc. at a predetermined temperature, and to also so obstruct the flame so that the latter does not have direct contact with the bottom of the receptacle etc, thereby to avoid destruction of the latter.

The novelty of the invention will be understood by reference to the following description in connection with the accompanying drawing in which:

Figure l is a top plan view of a burner constructed in accordance with my invention,

Figure 2 is a vertical, longitudinal, sectional view on the line 2-2 of Figure 1,

Figure 3 is a sectional view on the line 33'of Figure l, and

Figure 4 is a reduced top plan view of a burner manifold with the burner tips and spreader re moved.

Referring now to the drawing by numerals of reference, l indicates a straight tubular manifold member having a valve seat 2 between the inlet end 3 and the outlet end i. The outlet end is closed by a plug 5 and between the plug and the valve seat are oppositely located outlet openings 8 and l which discharge into two arcuate manifold members 8 and 9 to provide an open ring shaped manifold which carries the burner tips ll! arranged in circular series. The valve seat 2 is provided with a disc valve ll carried on the threaded stem l2 which has threaded connection with the plug 5 and which is operated by a handle 13 shown as a disc but which may partake of any other suitable form.

The manifold consisting of the member I and the arcuate members 8 and S, is supplied with gas or vapor from a pipe it connected to a suitable source of supply. It will be obvious that the gas or vapor flow can be regulated by the disc valve H.

Projecting upwardly through the manifold member I is a bushing l5 carrying a mixing chamber 16 which terminates in a gas tip I! pro- 1 constant temperature. burner serves a dual function, in that it not only vided with radial openings l8 so that the flame from the gas tip will be directed against the superposed flame obstructor ill to spread the flame toward the burner tips H). The flow of gas or vapor from the manifold member I through 5 the pilot burner formed by the mixing chamber EB 'and its tip, is controlled by a needle valve 20 having a stem 21 in threaded engagement with the bushing I5 at 22 to move the needle valve 2!! toward and away from the valve seat 23. 10-

The vapor or gas is admitted to the bushing through an opening or openings 2 in the manifold l, and it passes around the valve stem 2| into the mixing chamber Where it is supplied with air through an opening 25 in the mixing 15 chamber, the correct amount of air being admittedto promote combustion. The pilot valve stem carries a relatively large disc 26 at its lower end so that access may be had through the shell not shown, to operate the valve stem in a con- 20' constantly lighted and the burner tips are con- 25,

trolled by the disc valve H so that when the valve 8 l is on the seat 2, the flame at the burner tips ill will be extinguished, and when the valve l l is unseated the spreaded flame from the pilot burner will ignite the fuel issuing from the slots 30 26A in the tips ill. The tips ill are supplied with air through the opening 21.

The stem M is slightly smaller than the bore of the bushing so that the fuel may pass up into the mixing chamber. The valve stem IE will be 35 long enough to extend outside the casing surrounding the burner so that the valve l I may be seated and unseated in a convenient manner.

In order to provide a regulated, constant flow of fuel thru the pilot burner when the intermittently operated main burner is shut off, I have provided a constantpressure regulator 28 in the supply pipe M.

This is important in burners which are to be used in connection with receptacles, the con- 45 tents of which areto be kept at a substantially For example: The pilot provides a constant lighting element for the burner tips 26,.but it provides a constantly lighted 50 heat maintenance burner for maintaining the contents of the receptacle at a given temperature. For that reason, the regulatory valve 29 is provided for" the pilot burner and the constant pressure regulator is there for the purpose of 5 feeding the fuel at a constant pressure to the pilot burner so that there will be no fluctuation of the flame supplied by the pilot burner due to unequal pressures in the supply line.

This is an important feature in certain classes 60 of devices, and it will be obvious that by controlling the position of the needle valve or regulatory valve 29, that any desired amount of heat can be supplied by the pilot burner within the limits of its capacity.

From the foregoing it will be apparent that the invention, briefly considered, provides a burner structure wherein there are a series of main burner units, which initially heat a liquid containing receptacle to a predetermined temperature, and a pilot burner unit which has associated therewith a combined flame spreader and obstructor, all of the units receiving gas from a single gas supply conduit which has a constant pressure regulator, the flame from the pilot initially igniting the main burners when fuel is supplied thereto, so that when the main burner units are shut off, the flame from the pilot will continue to supply heat to the liquid to maintain the latter at a predetermined but lower temperature; the obstructor being effective to prevent direct contact of the flame with the receptacle, so that in the event of moisture in, the receptacle becoming dissipated, burning of the receptacle will be avoided.

What I claim is:

1. A gas burner having a manifold provided with a single gas inlet, means to supply gas to the inlet, pressure controlling means for maintaining a uniform predetermined pressure in the manifold, a series of main burner units communi eating with the manifold, a pilot burner unit communicating with the manifold and being common to the main burner units, a single manual control in the manifold to shut off the gas supply to all of the main burner units without affecting the supply of gas to the pilot burner unit, and means to control the amount of the gas egressing from the pilot burner whereby to fixedly set such amount so that a heating flame is had to definitely maintain the temperature of the material being heated at a predetermined point after the manual control shuts off the main heating burners, the main burner units being located in surrounding relation to the pilot burner unit and a flame obstructor overlying the pilot burner unit so as to cause the heat from the latter to be spread and distributed about the periphery of the obstructor, the upper ends of the main burner units and that of the pilot burner unit being in substantially the same horizontal plane.

2. A gas burner having a manifold provided with a gas inlet, a single conduit to supply gas to the entire manifold through said inlet, pressure controlling means for maintaining a uniform redetermined pressure in the manifold, a series of main burner units communicating with the manifold, a combined pilot and heating burner unit communicating with the manifold and being common to the main burner units, a manual shut off in the manifold to shut off the gas supply to the main burner units, said pilot burner being located between the gas inlet and said manual shut-off whereby, upon closing of the latter gas will cease to flow to the main burner units and -will continue to flow to the combined pilot and heating burner, and means to control the amount of the gas egressing from the pilot burner unit whereby to fixedly set such amount so that a heating flame is had to definitely maintain the temperature of the material being heated at a predetermined point after the manual control shuts off the main heating burner units, the main burner units being located in surrounding relation to the pilot burner with their upper ends in substantially the same horizontal plane, and a flame obstructor overlying the pilot burner, so as to cause the heat from the latter to be spread and distributed about the periphery of the defiector. l0

3. A gas burner having a manifold provided with a gas inlet, a single conduit to supply gas to the entire manifold through said inlet, pressure controlling means for maintaining a uniform predetermined pressure in the manifold, a series of main burner units communicating with the manifold, a combined pilot and heating burner unit communicating with the manifold and being common to the main burner waits, a manual shut off in the manifold to shut off the gas supply to the main burner units, said pilot burner being located between the gas inlet and said manual shutoff, whereby, upon closing of the latter gas will cease to flow to the main burner units and will continue to flow to the combined pilot and heating burner, and means to control the amount of the gas egressing from the pilot burner unit whereby to fixedly set such amount so that a heating flame is had to definitely maintain the temperature of the material being heated at a predetermined point after the manual control shuts off the main heating burner units, the main burner units being arranged in substantially circular formation with the pilot burner unit 10- cated centrally of the main burner units and a 3 substantially circular disk-like flame obstructor overlying the pilot burner unit so as to cause the heat from the latter to be spread and distributed about the periphery of the obstructor, the upper ends of all of the units being disposed in sub- 40 stantially the same horizontal plane.

l. A gas burner having a manifold provided with a gas inlet, a single conduit to supply gas to the entire manifold through said inlet, pressure controlling means for maintaining a uni- 4; form predetermined pressure in the manifold, a series of main burner units communicating with the manifold, a combined pilot and heating burner unit communicating with the manifold and being common to the main burner units,-a manual shut 01f in the manifold to shut off the gas supply to the main burner units, said pilot burner being located between the gas inlet and said manual shut-off, whereby, upon closing of the latter gas will cease to flow to the main burner 55 units and will continue to flow to the combined pilot and heating burner, and means to control the amount of the gas egressing from the pilot burner unit whereby to fixedly set such amount so that a heating flame is had to definitely maintain the temperature of the material being heated at a predetermined point after the manual control shuts off the main heating burner units, the pilot burner unit being located centrally with respect to the main burner units and a horizontal shielding plate-like member overlying the pilot burner unit to confine the fiame from the pilot burner unit to an approximately horizontal plane at the top of the pilot burner unit.

WILLIAM C. COLEMAN. 

